Process for the biological degradation of complex, non-readily d

Details Process for the biological degradation of complex, non-readily d Process for the biological degradation of complex, non-readily d

1989-05-01

1990-11-06

Wyse, Tom

Liquid purification or separation

Processes

Treatment by living organism

210613, 210617, 210630, 210631, C02F 330

Patent

active

049684272

ABSTRACT:
In a two-stage process for the biological degradation of complex, non-readily degradable wastewater constituents, acidification takes place in the first stage and anaerobic degradation in the presence of methanogenic organisms in the second stage. In the first stage, the wastewater is treated both with the acidogenic organisms and with dehalogenating and/or desulfonating and/or deaminating strains. In addition, highly sub-stoichiometric quantities of oxygen, based on the organic carbon load, are introduced in the first stage either directly or indirectly by addition of oxygen-yielding compounds. Both stages are advantageously operated as fluidized-bed processes using supports to immobilize the biomass.

REFERENCES:
patent: 4067801 (1978-01-01), Ishida et al.
patent: 4469600 (1984-09-01), Frydman et al.
patent: 4576718 (1986-03-01), Reischl et al.
patent: 4652374 (1987-03-01), Cohen

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